Pictures: Boston Marathon Explosions Aftermath And Reaction

CaptionMakeshift memorial

Don Emmert, AFP/Getty Images

Alice Binns, of Dorchester, looks at a makeshift memorial on the Boston Marathon route in Boston, Massachussetts. Binns ran in the marathon and said she had just finished the race when a bomb went off.

Alice Binns, of Dorchester, looks at a makeshift memorial on the Boston Marathon route in Boston, Massachussetts. Binns ran in the marathon and said she had just finished the race when a bomb went off. (Don Emmert, AFP/Getty Images)

President Barack Obama and first lady Michelle Obama attend the "Healing Our City: An Interfaith Service" dedicated to those who were gravely wounded or killed in the Boston Marathon bombing, at the Cathedral of the Holy Cross in Boston.

President Barack Obama and first lady Michelle Obama attend the "Healing Our City: An Interfaith Service" dedicated to those who were gravely wounded or killed in the Boston Marathon bombing, at the Cathedral of the Holy Cross in Boston. (Jewel Samad, AFP/Getty Images)